package proxy;

import org.apache.log4j.Logger;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;

public class IntermediaryInvocationHandler implements InvocationHandler {
    private Logger logger = Logger.getLogger(IntermediaryInvocationHandler.class);
    /**
     * 被代理的目标对象，即其内部含有对真实主题的引用
     */
    private Object target;

    public void setTarget(Object target) {
        this.target = target;
    }
    @Override
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        before();
        //在调用invoke方法时，就会执行真实主题即接口实现类中的方法也叫目标方法
        //反射执行目标对象的实际业务
        Object feedback = method.invoke(target,args);
        after();
        return "看房记录：买家反馈“"+feedback+"“";
    }
    public void before(){
        logger.debug("前期准备");
        logger.debug("查找房源");
        logger.debug("和卖家沟通时间");
    }
    public void after(){
        logger.debug("后期跟踪");
        logger.debug("和买家沟通意见");
    }
}
